Respiratory mask



FIG. 1 is a perspective view of a respiratory mask showing our newdesign, the broken lines of values and straps are for illustrativepurposes only and form no part of the claimed design;

FIG. 2 is a side elevational view thereof, the opposite side elevationalview being a mirror image of that shown;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof, the bottom plan view being a mirrorimage of that shown; and

FIG. 5 is a rear elevational view thereof.

The ornamental design for a respiratory mask, as shown and described.